设字符串str='Chinese',表达式str[1]的值是()。
A. C
B. h
C. s
D. e
以下程序的输出结果是()。str = "I love my family"print(str[-9: ])
A. family
B. y family
C. e my family
D. my family
以下程序的输出结果是()。str = "Welcome to beijing"print(str.find("to"))
A. 2
B. 3
C. 8
D. 9
以下程序的输出结果是()。for s in "I love my family":if s =='i':breakprint(s, end="")
A. I love my fam
B. I love my fami
C. I love my famil
D. I love my family